Feb., 1901] 
Bownocker — The Corning Fields. 
55 - 
Geology oe the Region.— The surface of the territory lies in 
the Lower Productive and Lower Barren coal measurers. The 
highest hills reach up to or extend above the Ames or Crinoidal 
limestone. In fact along the northeast extremity of the field the 
hills are capped by the limestones which underlie the Pittsburgh 
coal. The deepest valley — that of Sunday Creek — cuts through the 
Middle Kittanning coal, a short distance north of Corning, but at 
this town the seam named is under cover, while the Upper Freeport 
coal is at about drainage level. 
The succession of strata under ground is shown by the following 
record kept and furnished the Survey by Mr. G. W. Delong, Super- 
intendent of Schools, Corning. The well is located on lot 151 of the 
town just named, and the top of the well lies at the base of the 
Mahoning sandstone: 
Thickness of 
Total 
Stratum 
Thickness 
Shale 
25 feet 
25 feet 
Bastard Lime 
15 11 
40 
tl 
Sand 
10 “ 
50 
it 
Coal (No. 6) 
10 “ 
60 
t t 
White Slate 
65 “ 
125 
l t- 
Sand 
15 “ 
140 
1 1 
White Slate 
25 
165 
It- 
Blue 
10 “ 
175 
1 1- 
Sand 
185 
It- 
Slate 
235 
it 
Shale 
27o 
i t 
Sand 
300 
tl 
Black Shale 
310 
tt 
Lime 
25 “ 
335 
“ 
Shale with Concretions 
100 “ 
435 
1 1 
Slate 
460 
(1 
Limestone'!?) 
30 “ 
490 
tt 
Shale 
35 “ 
525 
It. 
Salt Sand 
30 “ 
555 
•> 
White Slate 
655 
tt- 
Slate and Concretions 
680 
it 
Shale . 
695 
tt- 
Little Salt Sand 
20 * “ 
715 
tt 
White Slate 
815 
tt 
Slate and Concretions 
915 
tt 
Brown Shale 
955 
tt 
Black Shale 
993 
tl 
Top Berea 
993 
It 
Bottom of Berea 
1008 
tt 
